baber/WOPTO huggingface dataset:
Patent GB-608103-A (GB)
Title: Improvements relating to super-regenerative radio receivers of the type associated with transmitting means
IPC: G01S13/76
Filed: 1946-02-15
Abstract: 608,103. Radio signalling. FERRANTI, Ltd., TAYLOR, M. K., and PAULDEN, R. S. Feb. 15, 1946, No. 4787. [Class 40 (v)] A responder comprising a super-regenerative receiver has a tuned circuit common to transmitting and receiving conditions across which a rectifying device is connected. This device is arranged to damp the tuned circuit to allow rapid decay of the quenched oscillations, but is blocked during transmission as a result of the increased amplitude of the oscillations, in order to remove the damping. In the Figure, the aerial is coupled to common tuned circuit 6, 6a which is connected to valve 1 acting both as a super-regenerative amplifier quenched by oscillator QFO and as the transmitting oscillator. The received interrogating pulses, after passing through the super-regenerative amplifier are rectified in diode 22 and further amplified by pentode 27. The resulting positive pulses are passed through pulse modifying circuit 39, 41 to the grid of valve 1 to permit violent responding oscillation. The anode of the diode is positively biassed in order to reduce the resistance sufficiently to provide the required damping in the receive condition, but in the transmit condition the more violent oscillation causes diode condenser 20 to be charged, thus blocking the diode and removing the damping.
Patent GB-234188-A (GB)
Title: Improvements in and relating to the precipitation of artificial threads and the like
IPC: D01F2/08
Filed: 1924-02-25
Abstract: The precipitating-bath used in the spinning of artificial threads, films, &c. from viscose contains one or more of the following substances,-the sulphonic acid of an hydrogenated aromatic hydrocarbon, oxymethyl naphthalene sulphonic acid, the condensation products of these acids or of the sulphonic acid of an aromatic hydrocarbon with aldehydes, ketones, &c., and particularly those substances of the classes specified as coagulate glue.  The sulphonic acids may be used as their salts. The bath may also contain the substances specified in Specification 234,433.  Other constituents of the bath are mineral acids, salts, natural tanning substances, &c. In examples, the baths employed contain tetrahydronaphthalene sulphonic acid, or the product obtained by condensing with one molecule of formaldehyde, one molecule of naphthalene or tetrahydronaphthalene sulphonic acid in the presence of sulphuric acid, or the sodium salt of oxymethyl naphthalene sulphonic acid, the baths in all cases containing free sulphuric acid.ALSO:Oxymethyl naphthalene sulphonic acid is prepared from naphthylcarbinol obtained, for example, by treating the corresponding amine with nitrous acids, or from naphthobenzyl chloride; the alcohol is converted into dinaphthyl ether, which is then sulphonated, and the sulphonic acid sulphuric ester saponified by boiling, after dilution with water, to give the desired sulphonic acid.  Condensation products are obtained by condensing one molecule of formaldehyde with one molecule of naphthalene or tetrahydronaphthalene sulphonic acid in the presence of sulphuric acid.
Patent GB-922598-A (GB)
Title: Halo-6-deoxytetracyclines
IPC: C07C233/00
Filed: 1960-02-11
Abstract: 7- or 11a -halo- or 7,11a -dihalo-6-deoxytetracyclines are produced by reacting a 6-deoxytetracycline which is unsubstituted in the 7-position and/or the 11a -position, with a source of electrophilic halogen in the presence of a strong acid, particularly sulphuric, hydrochloric or hydrobromic acid.  The halogen source may be bromine or an N-halo-amide such as N-bromosuccinimide, N-bromoacetamide, N-bromophthalimide, N-chlorosuccinimide or N- iodosuccinimide. Examples describe the preparation of 7-bromo-, 7-bromo-6-demethyl, 7-chloro-, 7-chloro-6-demethyl-, 7-bromo-5-hydroxy-, 7-iodo, 7-iodo-5-hydroxy-, 7-iodo- 6-demethyl-, and dibromo-6-deoxytetracycline either as the free antibiotic or as a sulphate.
Patent GB-194676-A (GB)
Title: Improved process and apparatus for the production of coarse precipitates from solutions
IPC: B01D9/00
Filed: 1923-02-19
Abstract: 194,676. Aktieselskapet de Norske Saltverker. March 11, 1922, [Convention date]. Addition to 171,370. Crystallizing. - In forming granular crystals, as described in the parent Specification, by supersaturating a solution out of contact with crystals, and circulating the supersaturated solution through a mass of crystals, the circulation is effected downwards through a mass of crystals b, Fig. 1, supported on a gauze diaphragm c and agitated by rotating arms f, or through a mass of crysta's o, Fig. 2, contained in a wiregauze drum k which is rotated in a casing m.
Patent GB-329365-A (GB)
Title: Improvements in or relating to crucible furnaces for melting metals
IPC: F27B14/14
Filed: 1929-02-13
Abstract: 329,365. Bailey, H. Feb. 13, 1929. Crucible furnaces.-In a crucible furnace comprising an upwardly tapering chamber 1 closed at the top by a removable cover 2 and having one or more waste gas flues 8 extending from the upper end, bearers 4 at the lower end separate the crucible chamber from an ashpit 6, to which air under pressure is supplied by conduits 9, and into which water is sprayed by pipes 7. The whole of the air from the conduits 9 passes through or across the ashpit before entering the crucible chamber. The furnace may be worked by natural draught when the door at the front end of the ashpit is opened. Specification 12534/08 is referred to.
Patent GB-1375440-A (GB)
IPC: H02K41/03
Filed: 1972-05-15
Abstract: 1375440 Linear motors XYNETICS Inc 15 May 1972 [28 June 1971] 04994/74 Divided out of 1375439 Heading H2A The Specification repeats portions of the description in Specification 1,375,439 but the claims relate to the prevention of rotation of a linear induction motor which is free to move over a planar conducting surface.
Patent GB-392686-A (GB)
Title: Means for the automatic control of the ventilators of green-houses, garden frames and the like
IPC: E05F1/00
Filed: 1932-02-20
Abstract: 392,686. Ventilating. MACKENZIE, I., Ledgrianach, Woodhall Road, Colinton, Edinburgh. Feb. 20, 1932, No. 5123. [Class 137.] In a thermostatic control of greenhouse &c. ventilators, the thermostat comprises a bellows 1, containing a volatile liquid, and enclosed by end-plates 2a, 2b of a frame 2, movement of the bellows actuating a ventilator 12 through a system of rods 3, 9, 11.
Patent GB-384273-A (GB)
Title: Improvements in or relating to attachments for preventing the slipping of vehicle whe
IPC: B60B15/00
Filed: 1931-02-18
Abstract: 384,273. Vehicle wheels. FIAT SOC. ANON., 250, Via Nizza, Turin, Italy. Feb. 18, 1931, No. 5187. Convention date, March 6, 1930. Void [Published under Sect. 91 of the Acts]. [Class 144 (i).] A wheel is fitted with a series of metal shoes arranged at the side of the tyre and provided with means for adjustment into operative or inoperative positions. In the form shown in Figs. 1 and 2, the shoes 3 are formed with slots 31 for adjustable attachment, by means of bolts 4, to an angle-ring 2, 2a secured to the wheel-disc 1. The face 2 of the ring is formed with grooves having serrated edges to cooperate with toothed edges 3a on the shoes. In the modification shown in Figs. 5 and 7, the shoes 16 are of arcuate shape with groundengaging teeth 17 and are secured by bolts 12 locked by cottars 11. Washers 10, 15, 14 are fitted as shown, the washers 15 and the shoes being formed with interengaging serrations.
Patent GB-197627-A (GB)
Title: Improvements in indicating mechanism for liquid dispensers
IPC: G01F15/00
Filed: 1922-02-22
Abstract: 197,627. Golby, F. W., (Bowser & Co., Inc., S. F.). Feb. 22, 1922 Counters actuated by reciprocating mechanism.-A liquid dispenser comprises a pump and a measuring chamber, and an indicating apparatus operated by the pumping mechanism, means being provided to prevent manual operation of the indicating mechanism to indicate more than the quantity delivered. A member 80 carried by a reciprocating part of the pump rotates during each up-stroke a spiral bar 81 of square &c. section and lifts it into engagement with the boss of a spur-wheel 88 so that, when the bar is rotated, the wheel moves with it. During the down stroke, the bar is disengaged from the spur-wheel, which is then locked against rotation by a square block 85. The wheel 88 drives a gear-wheel 90 carrying a spring-pawl 96 in permanent engagement with a ratchet 95 on a spindle 94. The spindle 94 carries a pointer 98 moving over a fixed scale and may be turned by means of a head 97 to bring the pointer back to zero, 'but not in a forward direction owing to the engagement of the pawl 98 with the ratchet.
Patent GB-571469-A (GB)
Title: Improvements in or relating to the preparation of cellulose from wood
IPC: D21B1/06
Filed: 1943-04-01
Abstract: 571,469. Obtaining cellulosic fibre. KILBURN, B. E. D. (Keys, L. F. W.). April 1, 1943, No. 5218. [Class 96] [Also in Group XXIII] Baobob or other trees are felled, and wood fibre obtained for the production of cellulose, by stripping the bark, and cutting and peeling off wood strips about 1 in. thick and 5 ft. long, as successive layers, from the lower part of the trunk until the tree falls, whereafter the rest of the tree is peeled, and the strips baled. The wood may be hammered to loosen the fibres; it may be washed and beaten in a rotary beater with freely pivotted arms, and may be bleached or dried by the sun. The hammer may comprise a short wooden handle with a head integral therewith and projecting at an acute angle.
Patent GB-384487-A (GB)
Title: Improvements relating to casings or covers for machinery or parts thereof
IPC: H02K5/04
Filed: 1932-02-22
Abstract: 384,487. Motor casings. COLLARO, C., 111, Sutherland Avenue, Maida Vale, and COLLARO, Ltd., Culmore Road, Peckham, both in London. Feb. 22, 1932, No. 5298. [Class 35.] To ensure that the portions of a two - part casing of a motor or other machine are properly aligned three or more V-shaped projections are formed in the edge of one portion which fit into corresponding recesses in the edge of the other, the edges not being formed with flanges or otherwise thickened. The Figure shows a gramophone motor having a casing of square cross section formed in two parts 1, 2. In the middle of each side of the part 2 is formed a projection 7 fitting into a corresponding recess 8 in the edge of the part 1. The parts 1, 2 are secured together by bolts 9. In a modification the projections and recesses are formed as semicircles of slightly different radii to produce a wedging action.
Patent GB-940454-A (GB)
Title: Improvements in or relating to magnetic recording and reproducing arrangements for recording and reproducing measuring processes
IPC: G01D15/04
Filed: 1960-02-15
Abstract: 940,454. Magnetic recording methods. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 15, 1960 [Feb. 18, 1959], No. 5311/60. Heading G5R. Carrier-frequency signals,one amplitude modulatedto represent analogue measurements,are recorded in tracks M and T on a magnetic tape,the output from one track being used to demodulate the output from the other on playback to realise the analogue measurements. The same bridge circuit which is used normally to provide direct measurements in conjunction with an extensometer transducer (Fig. 1, not shown) is used to analyse the recording, the unmodulated carrier frequency synchronizing the demodulator. Preferably, the pair of heads 18, 18<SP>1</SP> are mounted on a drum 21,which is rotated to read the tracks appropriate to a stationary bight of tape 141 which is transported incrementally.
Patent GB-311476-A (GB)
Title: Improvements in electro-magnetic drive units for loud speakers and the like
IPC: H04R11/00
Filed: 1928-02-20
Abstract: 311,476. Parr, G. W. Feb. 20, 1928. Magnetic instruments. - An electromagnetic drive unit for loud-speakers, &c., particularly of the balanced armature type, has non-magnetic stops 10 of paper, mica, varnish, indiarubber, non-magnetic metal, &c., on the magnet pole faces adapted to prevent the movements of the armature 4 from exceeding the limits in which they vary in about direct proportion to the net permanent magnetic attraction acting on the armature. Such an arrangement enables a simple and weak restoring spring to be used. The unit shown comprises a permanent magnet 1 with pole pieces 2, 3 constructed and arranged as shown. The armature 4 passes through the coil 8 and is carried by a stirrup 5 which is supported between blade springs 6 and coupled with a drive rod 7. The springs 6 are anchored at their ends on small pillars 9 screwed to the pole pieces.
Patent GB-742724-A (GB)
Title: Improvements in or relating to thermally-responsive electric switches
Inventor: MARRS TERENCE JOHN DESMOND
IPC: H01H37/52
Filed: 1953-02-26
Abstract: 742,724. Thermal switches; switches, partly magnetic. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 24, 1954 [Feb. 26, 1953], No. 5348/53. Class 38(5) A thermostat comprises a pair of bimetal strips 13, 14 mounted on arms 11, 12 of a member 7 having a pair of spaced ears 8 through which a spindle 10 passes to pivotally mount the member 7 on a casing projection 5. The strips 13, 14 have their high expansion sides facing each other, the strip 13 co-operating with a snail cam 16 for adjustment of the operating temperature, and the strip 14 carrying an armature 22 co-operating with a magnet 27. An offset extension 24 of the armature carries an insulating strip 25 co-operating with a stud 43 on an arm 38 supporting a contact 37. The arm 38 is supported by a resilient strip 40 whereby the contact 37 is biased towards a fixed contact 32. On rise of temperature the strips 13,14 deflect away from each other, the strip 13 engaging the cam 16 whereby its deflection is transmitted through the pivoted member 7 to the strip 14 and augments the deflecting force of the latter. Eventually, the armature 22 leaves the magnet 27 and the strip 25 strikes the stud 43 and the contacts 32, 37 are opened. In a modification in which the contacts are opened in response to a fall in temperature, the low expansion sides of the strips 13, 14 face each other. The thermostat may be used in conjunction with the air heater disclosed in Specification 730,299, [Group XI].
Patent GB-801229-A (GB)
Title: Pressure release device for containers particularly for gas-tight accumulators
IPC: H01M50/552
Filed: 1956-02-21
Abstract: 801,229. Batteries. ACCUMULATORENFABRIK A.G. Feb. 21, 1956 [Feb. 28, 1955], No. 5400/56. Class 53. [Also in Group XXIX] A pressure release device for a gas-tight accumulator comprises a thin membrane 2 which at a predetermined internal pressure is ruptured by a puncturing member 6 so that electrolyte is ejected and changes the colour of an indicator solution absorbed in sound-absorbing material 5. The member 6 may be of needle shape or have a cutting or serrated edge.
Patent GB-907018-A (GB)
Title: Improvements in or relating to thermionic valves
Inventor: FIELD ANDREW GEORGE
IPC: H01J19/00
Filed: 1959-02-17
Abstract: In a grid for a thermionic valve the grid-wires comprise gold-coated quartz fibre.  The gold-coating may be formed by passing a quartz fibre through an electrically heated spiral of thin gold wire in a vacuum chamber.  Alternatively, quartz fibres may be secured to a quartz or other refractory insulating frame and then gold-coated by known sputtering techniques to form the grid.
Patent GB-953160-A (GB)
Title: Improvements in automatic weft straightening equipment
Inventor: JOHNELS ARNE
IPC: D06H3/12
Filed: 1963-02-11
Abstract: 953,160. Automatic weft straightening systems. KILSUNDS A.B. Feb. 11, 1963, No. 5429/63. Heading G3R. A weft straightener for a fabric web is controlled according to the time interval between the response of two detectors, one at each edge of the web, to marks made simultaneously on both edges at a stage when the weft was at right angles to the warp. The marks may be made on the loom by a device triggered by the weft thread counter and may be of iron powder mixed with stamping dye, detected by capacitance pick-ups, a radio-active substance for radiation detectors or distinctive colour spots for photo-electric detection. Alternatively, a weft thread treated with a non-visible tracer substance, e.g. radio-active, may be inserted periodically. The straightener may comprise rolls at a variable angle to each other.
Patent GB-216567-A (GB)
Title: Improvements in hair pins, hair curlers and the like
IPC: A45D8/02
Filed: 1923-02-26
Abstract: 216,567. Freeman, R. Feb. 26, 1923. H.air-pins; h a i r - curling appliances; combs, hair. - A device for securing hairpins, hair-curlors, combs, &c. comprises a detachable openended sleeve having a substantially even or uninterrupted internal contacting surface and adapted to be attached to the prong or prongs with the latter extending fherethrough. The device consists of a short tube a, Figs. 1 and 4, slightly conical in form, of metal, glass, ivory, fibre, rubber, or other material, and may be ornamented or may carry a gear. It may also be made of coiled wire and may be flattened in cross section. Fig. 6 shows the device on one prong of a fancy hair-pin. In this case, it is a close fit, and may be lined with rubber or cork. It may have one or more slits so as to fit various sizes of prong. This form may also be applied to ornamental combs. As shown in Fig. 8, the tube may be made of smaller diameter to fit one prong only of a hair-pin b, and provided with a flange to facilitate handling. According to the Provisional Specification, the device may be permanently attached to one prong and slide over the other prong, or may have one closed end. Reference has been directed by the comptroller to Specifications 15986/96 and 9653/00.
Patent GB-437263-A (GB)
Title: Improvements relating to the electrical transmission of sound, pictures or the like
IPC: H04J1/00
Filed: 1934-02-19
Abstract: 437,263. Wired wireless systems. LAUB, J. J., 56, Ferdinandstrasse, Hamburg, and KIRSCHSTEIN, F., 10, Chlodwigstrasse, Tempelhof, Berlin, both in Germany. Feb. 19, 1934, No. 5509. Convention date, Feb. 18, 1933. [Class 40 (v)] Multiplex signals are transmitted over an ordinary cable on carrier waves, the wave lengths of which lie between 20 metres and 5,000 metres, and the separation at the point of reception is effected by tuned oscillatory circuits. Overhead lines may be provided for part of the distance between the transmitter and receiver. Specifications 123,081, [Class 40 (v)], and 353,020, are referred to.
Patent GB-120695-A (GB)
Title: Automatic Grader for Potaoes, Roots, and Fruit.
Inventor: PESSELL ROBERT CHARLES
IPC: B07B13/00
Filed: 1918-04-02
Abstract: 120,695. Pessell, R. C. April 2, 1918. Boxes combined with sorting-apparatus. - A portable apparatus for grading fruit, potatoes, &c., at the time and place of gathering comprises a box or basket divided into compartments c and provided with a vibrating perforated cover d. The inclined cover may be connected to the box by a spring hinge h or may be mounted on the edges thereof by helical springs. The openings e, f, g in the cover are graded to correspond with the compartments of the box, and the device may be mounted on wheels to facilitate movement from place to place. The openings may be formed by spaced laths, or by holes cut in the cover, or by a sectionally constructed lattice adapted to be extended to vary the sizes of the apertures to suit the roots under treatment. The cover may be flat, curved funnel-shaped, or tubular.
Patent GB-1493864-A (GB)
Title: Refill units for windscreen wiper blade assemblies
IPC: B60S1/38
Filed: 1975-02-11
Abstract: 1493864 Windscreen wipers TRICO PRODUCTS CORP 11 Feb 1975 [11 Feb 1974] 5671/75 Heading A4F A windscreen wiper refill unit for attachment to a pressure distributing harness comprises a wiping element 34 having an anchoring bead 48 received in an elongate channel member 40 of a backing strip 36 of flexible resilient material, e.g. of plastics, having side rails 38 to be slidably received between harness claws 28, (30) Fig. 1 (not shown), the member 40 having its open side directed away from the rails 38 and being coupled to the latter by resiliently flexible means, e.g. strip portions 44. The rails 38 are thus movable towards or away from each other so that the refill unit may be fitted to harness members differing in their claw spacing. Projections 63 on the anchoring bead 48 engage in apertures 47 in the member 40 to restrain relative longitudinal movement between the wiping element 34 and the backing strip 36. A clip 58 for retaining the refill unit in the harness has notches 66 to be engaged by harness claws 28, tabs 70 for engagement in openings 46 in the backing strip portions 44, and a tongue 65 to be engaged in the channel member 40. The harness may comprise primary levers (18, 20, Fig. 1), pivoted together at their inner ends and to the middle of a secondary yoke (24), and pivotally mounted on a pin (14) extending laterally from a wiper arm (12). The junction between the rails 38 and strip portions 44 may be reduced in thickness for added flexibility, Fig. 4 (not shown).
Patent GB-1524373-A (GB)
Title: Electrical switch
IPC: G09F13/00
Filed: 1975-02-11
Abstract: 1524373 Switch indicators LUCAS ELECTRICAL CO Ltd 22 Jan 1976 [11 Feb 1975] 5711/75 Heading H1N In an indicating system for an electric switch a light transmission region 15, Fig. 1, of an operating member 13 is illuminated from a light source 17 through a lens 19, whereby movement of the lens 19 or light source 17 on movement of the operating member alters the area illuminated to give an indication of the operating position. The light source 17 may be an optical cable and the lens 19 may be cylindrical in order to illuminate the region 15 with a narrow band which changes to illuminate the whole area on movement of the button 13.
Patent GB-1381801-A (GB)
Title: Fluid flow valve
IPC: F16K7/06
Filed: 1972-02-08
Abstract: 1381801 Valves BP CHEMICALS INTERNATIONAL Ltd 9 Jan 1973 [8 Feb 1972] 5744/72 Heading F2V A valve for controlling the flow of fluid from a flexible tube comprises holding means such as a clamping ring 4 and controlling means in the form of a screw 5 inclined at an angle to the longitudinal axis of the tube. The screw is positioned at a distance from the exit point of the tube such that a single jet of fluid issues therefrom. -
Patent GB-1305137-A (GB)
IPC: B01J23/56
Filed: 1970-02-06
Abstract: 1305137 Producing aromatic hydrocarbons ASAHI KASEI KOGYO KK 6 Feb 1970 [10 Feb 1969 28 Aug 1969 25 Dec 1969] 5820/70 Heading C5E Aromatic hydrocarbons are produced by heating a mixture of H 2  and non-aromatic hydrocarbons to 300-650‹ C. in the presence of a catalyst comprising Pt and Pb. The catalyst may also contain Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, Zn, Cd, Hg, Ge, Sr, Bi, Cr, Mo, W, U, Re, Ru, Rh, Pd, Os and/or Ir, and may include Al 2 O 3 , SiO 2 , SiO 2 -Al 2 O 3 , kaolin, bentonite or a zeolite as carrier. The Pt may be present in amount 0À01-5 wt. per cent, the Pb 0À01-5 wt. per cent and the third component 0-10 wt. per cent. Examples describe the conversion of n-heptone to a mixed aromatic product, mainly toluene, and of a naphtha feedstock comprising paraffins, olefins naphthenes and aromatics to a product of much higher aromatic content.
Patent GB-1208814-A (GB)
Title: Trans-dihydroxy-bis-hydroxycarbonylethylene salts
IPC: C07C59/42
Filed: 1968-02-06
Abstract: 1,208,814. Trans - dihydroxy - bis - hydroxycarbonyl ethylene salts. TAKEDA YAKUHI KOGYO K.K. 6 Feb., 1968 [13 Feb., 1967], No. 5872/68. Heading C2C. Novel amine salts of trans-dihydroxy-bishydroxycarbonylethylene, the amine being morpholine or piperazine, are produced by the reaction between trans-dihydroxy-bis-hydroxycarbonylethylene and morpholine or piperazine. Pharmaceutical compositions having antipyretic, analgesic, and anti-inflammatory activity and containing the compounds defined above, are administered orally, parenterally, or topically in association with a pharmaceutical carrier.